1/*- 2 * Copyright 2018 Aniket Pandey 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * SUCH DAMAGE. 24 * 25 * $FreeBSD$ 26 */ 27 28#include <sys/mman.h> 29#include <sys/stat.h> 30 31#include <atf-c.h> 32#include <fcntl.h> 33#include <limits.h> 34#include <stdint.h> 35#include <stdlib.h> 36#include <unistd.h> 37 38#include "utils.h" 39 40static pid_t pid; 41static struct pollfd fds[1]; 42static mode_t mode = 0777; 43static int filedesc; 44static char extregex[80]; 45static struct stat statbuff; 46static const char *auclass = "cl"; 47static const char *path = "fileforaudit"; 48static const char *errpath = "dirdoesnotexist/fileforaudit"; 49static const char *failurereg = "fileforaudit.*return,failure"; 50 51 52ATF_TC_WITH_CLEANUP(munmap_success); 53ATF_TC_HEAD(munmap_success, tc) 54{ 55 atf_tc_set_md_var(tc, "descr", "Tests the audit of a successful " 56 "munmap(2) call"); 57} 58 59ATF_TC_BODY(munmap_success, tc) 60{ 61 pid = getpid(); 62 snprintf(extregex, sizeof(extregex), "munmap.*%d.*return,success", pid); 63 64 /* Allocate sample memory, to be removed by munmap(2) */ 65 char *addr = mmap(NULL, sizeof(char), PROT_READ , MAP_ANONYMOUS, -1, 0); 66 FILE *pipefd = setup(fds, auclass); 67 ATF_REQUIRE_EQ(0, munmap(addr, sizeof(char))); 68 check_audit(fds, extregex, pipefd); 69} 70 71ATF_TC_CLEANUP(munmap_success, tc) 72{ 73 cleanup(); 74} 75 76 77ATF_TC_WITH_CLEANUP(munmap_failure); 78ATF_TC_HEAD(munmap_failure, tc) 79{ 80 atf_tc_set_md_var(tc, "descr", "Tests the audit of an unsuccessful " 81 "munmap(2) call"); 82} 83 84ATF_TC_BODY(munmap_failure, tc) 85{ 86 const char *regex = "munmap.*return,failure : Invalid argument"; 87 FILE *pipefd = setup(fds, auclass); 88 ATF_REQUIRE_EQ(-1, munmap((void *)SIZE_MAX, -1)); 89 check_audit(fds, regex, pipefd); 90} 91 92ATF_TC_CLEANUP(munmap_failure, tc) 93{ 94 cleanup(); 95} 96 97 98ATF_TC_WITH_CLEANUP(close_success); 99ATF_TC_HEAD(close_success, tc) 100{ 101 atf_tc_set_md_var(tc, "descr", "Tests the audit of a successful " 102 "close(2) call"); 103} 104 105ATF_TC_BODY(close_success, tc) 106{ 107 /* File needs to exist to call close(2) */ 108 ATF_REQUIRE((filedesc = open(path, O_CREAT | O_RDWR, mode)) != -1); 109 /* Call stat(2) to store the Inode number of 'path' */ 110 ATF_REQUIRE_EQ(0, stat(path, &statbuff)); 111 FILE *pipefd = setup(fds, auclass); 112 ATF_REQUIRE_EQ(0, close(filedesc)); 113 114 /* intmax_t to support all architectures */ 115 snprintf(extregex, sizeof(extregex), "close.*%jd.*return,succes", 116 (intmax_t)statbuff.st_ino); 117 check_audit(fds, extregex, pipefd); 118} 119 120ATF_TC_CLEANUP(close_success, tc) 121{ 122 cleanup(); 123} 124 125 126ATF_TC_WITH_CLEANUP(close_failure); 127ATF_TC_HEAD(close_failure, tc) 128{ 129 atf_tc_set_md_var(tc, "descr", "Tests the audit of an unsuccessful " 130 "close(2) call"); 131} 132 133ATF_TC_BODY(close_failure, tc) 134{ 135 const char *regex = "close.*return,failure"; 136 FILE *pipefd = setup(fds, auclass); 137 /* Failure reason: file does not exist */ 138 ATF_REQUIRE_EQ(-1, close(-1)); 139 check_audit(fds, regex, pipefd); 140} 141 142ATF_TC_CLEANUP(close_failure, tc) 143{ 144 cleanup(); 145} 146 147 148ATF_TC_WITH_CLEANUP(closefrom_success); 149ATF_TC_HEAD(closefrom_success, tc) 150{ 151 atf_tc_set_md_var(tc, "descr", "Tests the audit of a successful " 152 "closefrom(2) call"); 153} 154 155ATF_TC_BODY(closefrom_success, tc) 156{ 157 const char *regex = "close_range\\(2\\),.*,0x7fffffff,lowfd,.*" 158 "0xffffffff,highfd,.*return,success"; 159 FILE *pipefd = setup(fds, auclass); 160 161 /* closefrom(2) returns 'void' */ 162 closefrom(INT_MAX); 163 check_audit(fds, regex, pipefd); 164} 165 166ATF_TC_CLEANUP(closefrom_success, tc) 167{ 168 cleanup(); 169} 170 171 172ATF_TC_WITH_CLEANUP(revoke_success); 173ATF_TC_HEAD(revoke_success, tc) 174{ 175 atf_tc_set_md_var(tc, "descr", "Tests the audit of a successful " 176 "revoke(2) call"); 177} 178 179ATF_TC_BODY(revoke_success, tc) 180{ 181 char *ptyname; 182 pid = getpid(); 183 snprintf(extregex, sizeof(extregex), "revoke.*%d.*return,success", pid); 184 185 /* Obtain a pseudo terminal and get the path to slave device */ 186 ATF_REQUIRE((filedesc = posix_openpt(O_RDWR | O_NOCTTY)) != -1); 187 ATF_REQUIRE((ptyname = ptsname(filedesc)) != NULL); 188 189 FILE *pipefd = setup(fds, auclass); 190 ATF_REQUIRE_EQ(0, revoke(ptyname)); 191 check_audit(fds, extregex, pipefd); 192 close(filedesc); 193} 194 195ATF_TC_CLEANUP(revoke_success, tc) 196{ 197 cleanup(); 198} 199 200 201ATF_TC_WITH_CLEANUP(revoke_failure); 202ATF_TC_HEAD(revoke_failure, tc) 203{ 204 atf_tc_set_md_var(tc, "descr", "Tests the audit of an unsuccessful " 205 "revoke(2) call"); 206} 207 208ATF_TC_BODY(revoke_failure, tc) 209{ 210 FILE *pipefd = setup(fds, auclass); 211 /* Failure reason: file does not exist */ 212 ATF_REQUIRE_EQ(-1, revoke(errpath)); 213 check_audit(fds, failurereg, pipefd); 214} 215 216ATF_TC_CLEANUP(revoke_failure, tc) 217{ 218 cleanup(); 219} 220 221 222ATF_TP_ADD_TCS(tp) 223{ 224 ATF_TP_ADD_TC(tp, munmap_success); 225 ATF_TP_ADD_TC(tp, munmap_failure); 226 227 ATF_TP_ADD_TC(tp, close_success); 228 ATF_TP_ADD_TC(tp, close_failure); 229 ATF_TP_ADD_TC(tp, closefrom_success); 230 231 ATF_TP_ADD_TC(tp, revoke_success); 232 ATF_TP_ADD_TC(tp, revoke_failure); 233 234 return (atf_no_error()); 235} 236